单项选择题
Operating conditions in the crank chamber are very （） those in the cylinder.
A.the same as B.similar to C.separated from D.different from
单项选择题 Opening of the cylinder （） will admit compressed air into the cylinder.
单项选择题 Once all cylinders are firing regularly, （） is shut off.
单项选择题 Once a scavenge fire is detected, fuel should be shut off from the affected cylinders and cylinder lubrication increased （） the risk of seizure.
